Is It Too Late to Buy ExxonMobil Stock?

Energy prices are volatile, swinging from highs to lows, often in swift and dramatic fashion. Right now, oil is on the rise, leading investors to bid up the stock prices of companies like ExxonMobil (XOM 1.10%).Have you missed out? That depends on a lot of factors, but it might not be the best way to think about this energy leader. Here's what you need to know.The best time to buy Exxon is the hardest time to buy itOil and natural gas prices, though impossible to predict, often track along with the global e ...